CVE-2026-51190

Command execution via shell-enabled init argument

Published Aug 3, 2026 · Updated Aug 3, 2026

OS command injection in Serverless-Devs @serverless-devs/s 3.1.11 and earlier allows context-dependent attackers to execute commands. The s init path accepts a .git-suffixed argument as valid, then passes the unsanitized value to child_process.spawn() with shell mode enabled. Execution requires a user to run s init with an attacker-controlled argument, after which injected commands run with that user's privileges.

CVSS severity9.8
Critical
EPSS probability1.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Serverless-Devs @serverless-devs/s 3.1.11 and earlier allows context-dependent attackers to execute commands. The s init path accepts a .git-suffixed argument as valid, then passes the unsanitized value to child_process.spawn() with shell mode enabled. Execution requires a user to run s init with an attacker-controlled argument, after which injected commands run with that user's privileges.

The record

CVE
CVE-2026-51190
Published
Aug 3, 2026
Updated
Aug 3, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8MITRECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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